www.RMSTitanic100.com was working fine but now two problems.

1. When in Admin we go to update an order status and click update the message we type in window for buyer does not appear and we get an error message re email. Uf we go back in to the Admin Again where it lists the customers the order status has been updated there OK but when I open up that order the message has not gone in to the window.

2. If I go in to Tools and try to send a customer an email it does not work.

Uas using SMTPATH which worked before and checked log on and password are correct. Then swithched to PHP and get this error message
Could not instatuate mail function. Also tried smtp.

Have a .co.uk site which is working and the email settings on this as same as those that are not working on .com.

HELP PLEASE !!!